EP0446552A1 - Composés supraconducteurs et procédé pour leur réalisation - Google Patents

Composés supraconducteurs et procédé pour leur réalisation Download PDF

Info

Publication number: EP0446552A1
Authority: EP; European Patent Office
Prior art keywords: compounds; temperature; mixture; pellets; superconductive
Prior art date: 1989-02-16
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP90500017A

Other languages

German (de)

English (en)

Other versions

EP0446552B1 (fr

Inventor

Ramon Galvan Cavazos

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

GALVAN CAVAZOS, RAMON

Original Assignee

Individual

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1989-02-16

Filing date

1990-03-16

Publication date

1991-09-18

1990-03-16 Application filed by Individual filed Critical Individual

1990-03-16 Priority to EP90500017A priority Critical patent/EP0446552B1/fr

1990-03-16 Priority to DE69029260T priority patent/DE69029260D1/de

1991-09-18 Publication of EP0446552A1 publication Critical patent/EP0446552A1/fr

1995-02-22 Priority to US08/392,403 priority patent/US5583096A/en

1996-11-27 Application granted granted Critical

1996-11-27 Publication of EP0446552B1 publication Critical patent/EP0446552B1/fr

2010-03-16 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

150000001875 compounds Chemical class 0.000 title claims abstract description 26
238000000034 method Methods 0.000 title claims abstract description 14
239000008188 pellet Substances 0.000 claims description 12
239000000843 powder Substances 0.000 claims description 12
239000000203 mixture Substances 0.000 claims description 11
230000007704 transition Effects 0.000 claims description 10
QPLDLSVMHZLSFG-UHFFFAOYSA-N CuO Inorganic materials [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 4
239000000919 ceramic Substances 0.000 claims description 4
238000002156 mixing Methods 0.000 claims description 3
229910000018 strontium carbonate Inorganic materials 0.000 claims description 3
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
229910052791 calcium Inorganic materials 0.000 claims description 2
239000011575 calcium Substances 0.000 claims description 2
238000010438 heat treatment Methods 0.000 claims description 2
GEYXPJBPASPPLI-UHFFFAOYSA-N manganese(III) oxide Inorganic materials O=[Mn]O[Mn]=O GEYXPJBPASPPLI-UHFFFAOYSA-N 0.000 claims description 2
238000004519 manufacturing process Methods 0.000 claims description 2
238000003825 pressing Methods 0.000 claims description 2
LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 claims description 2
238000000227 grinding Methods 0.000 claims 2
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
229910052788 barium Inorganic materials 0.000 claims 1
DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims 1
238000001354 calcination Methods 0.000 claims 1
229910052802 copper Inorganic materials 0.000 claims 1
239000010949 copper Substances 0.000 claims 1
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 1
229910052760 oxygen Inorganic materials 0.000 claims 1
239000001301 oxygen Substances 0.000 claims 1
150000003839 salts Chemical class 0.000 claims 1
229910052712 strontium Inorganic materials 0.000 claims 1
CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims 1
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 3
229910052748 manganese Inorganic materials 0.000 abstract description 3
239000011572 manganese Substances 0.000 abstract description 3
239000000463 material Substances 0.000 description 9
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 4
239000002887 superconductor Substances 0.000 description 4
229910002480 Cu-O Inorganic materials 0.000 description 3
230000006399 behavior Effects 0.000 description 2
229910052797 bismuth Inorganic materials 0.000 description 2
JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 2
AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
239000007788 liquid Substances 0.000 description 2
238000005259 measurement Methods 0.000 description 2
229910044991 metal oxide Inorganic materials 0.000 description 2
150000004706 metal oxides Chemical class 0.000 description 2
238000012986 modification Methods 0.000 description 2
230000004048 modification Effects 0.000 description 2
229910052757 nitrogen Inorganic materials 0.000 description 2
235000010333 potassium nitrate Nutrition 0.000 description 2
229910052761 rare earth metal Inorganic materials 0.000 description 2
239000000523 sample Substances 0.000 description 2
238000003746 solid phase reaction Methods 0.000 description 2
238000010671 solid-state reaction Methods 0.000 description 2
229910015901 Bi-Sr-Ca-Cu-O Inorganic materials 0.000 description 1
239000005751 Copper oxide Substances 0.000 description 1
-1 R=Y Inorganic materials 0.000 description 1
BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
229910009203 Y-Ba-Cu-O Inorganic materials 0.000 description 1
229910010293 ceramic material Inorganic materials 0.000 description 1
229910000431 copper oxide Inorganic materials 0.000 description 1
230000001351 cycling effect Effects 0.000 description 1
238000011161 development Methods 0.000 description 1
BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 1
230000003287 optical effect Effects 0.000 description 1
230000003647 oxidation Effects 0.000 description 1
238000007254 oxidation reaction Methods 0.000 description 1
239000004323 potassium nitrate Substances 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
150000002910 rare earth metals Chemical class 0.000 description 1
238000011160 research Methods 0.000 description 1
229910052709 silver Inorganic materials 0.000 description 1
239000004332 silver Substances 0.000 description 1
239000007787 solid Substances 0.000 description 1
229910052727 yttrium Inorganic materials 0.000 description 1
VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1

Images

Classifications

- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/45—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on copper oxide or solid solutions thereof with other oxides
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/80—Constructional details
- H10N60/85—Superconducting active materials
- H10N60/855—Ceramic superconductors
- H10N60/857—Ceramic superconductors comprising copper oxide
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S505/00—Superconductor technology: apparatus, material, process
- Y10S505/725—Process of making or treating high tc, above 30 k, superconducting shaped material, article, or device
- Y10S505/739—Molding, coating, shaping, or casting of superconducting material

Definitions

the present invention relates to superconductive compounds which show superconductive characteristics in multiple phases at temperatures ranging from approximately 87° K to 310° K, and to a process for the production of said compounds.
the present invention provides superconductive compounds with new compositions, based on metal oxides, which present higher superconducting transition temperatures, as well as a process for obtaining the same.
the present invention also provides a process for producing such compounds, which process consists essentially of a solid state reaction with specific times , temperatures and oxidation conditions, which determine the characteristics of the compounds.
our new compounds present optical characteristics different from the already well-known 90° K superconductors.
a primary object of this invention is to provide new compositions of manganese-based compounds which present superconducting transition temperatures in the range of from 87°K to 310°K, approximately.
Another object is to provide a process for producing these new compounds, specifying the parameters which insure the reproducibility of the results.
the compounds are obtained by mixing powders of manganese oxide, strontium carbonate and copper oxide.
the process for producing the above-mentioned compounds comprises first mixing appropriate amounts of the original components and then pressing the mixture to form pellets.
the pressed powders are subjected to the following heat treatment:
the pellets are ground to a fine powder and reheated for 27 hours at 800°C.
the process is repeated at 850°C, for the same period of time.
the materials are reground and reheated to 900°C, for 12 hours. The last step is repeated once more.
Potassium nitrate is then added to the powder mixture and mixed thoroughly.
the powders are pressed into pellets and reheated at 900°C, for 12 hours.
Figure 1 shows a resistance vs. temperature plot of a typical manganese-based sample of the present invention, showing a resistance drop temperature at 310°K, and other resistance drop to zero at a temperature of 87°K.
powders of Mn2O3, SrCO3 and CuO of high purity are mixed, for example, in the proportion 2:2:3.
a pressed powder pellet of 1 cm in diameter and 0 .5 cm thick is prepared with a pressure of 10 Kg/cm2.
the resulting pellet is heated to a temperature of 600°C for approximately 14 hours.
the temperature is then raised to a value of 800°C, and maintained approximately 22 hours.
the temperature of the pellet is increased to 850°C and maintained for approximately 25 hours.
the compound obtained is a solid compact, blackish (bluish black) pellet.
the pellet is ground and calcinated in the following sequence:
KNO3 is added to the powder mixture in an amount of 10% by weight of the powders, and the mixture is ground until homogeneity is reached.
the powder is pressed into pellets which are heated at 900°C for approximately 12 hours.
Figure 1 shows a typical plot of resistance vs. temperature of the compound prepared in this way.
the superconducting state is characterized by zero resistance measurement within the experimental precision.
the resistance measurements were made by the usual fourpoint-probe technique in different configurations using silver point contacts.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Ceramic Engineering (AREA)
Manufacturing & Machinery (AREA)
Materials Engineering (AREA)
Structural Engineering (AREA)
Organic Chemistry (AREA)
Compositions Of Oxide Ceramics (AREA)
Inorganic Compounds Of Heavy Metals (AREA)

EP90500017A 1989-02-16 1990-03-16 Composés supraconducteurs et procédé pour leur réalisation Expired - Lifetime EP0446552B1 (fr)

Priority Applications (3)

Application Number	Priority Date	Filing Date	Title
EP90500017A EP0446552B1 (fr)	1989-02-16	1990-03-16	Composés supraconducteurs et procédé pour leur réalisation
DE69029260T DE69029260D1 (de)	1989-02-16	1990-03-16	Supraleitende Zusammensetzungen und Verfahren zu ihrer Herstellung
US08/392,403 US5583096A (en)	1989-02-16	1995-02-22	Superconductive compounds and process for producing said compounds

Applications Claiming Priority (5)

Application Number	Priority Date	Filing Date	Title
US31106689A	1989-02-16	1989-02-16
EP90500017A EP0446552B1 (fr)	1989-02-16	1990-03-16	Composés supraconducteurs et procédé pour leur réalisation
US71718091A	1991-06-18	1991-06-18
US82408392A	1992-01-22	1992-01-22
US11525193A	1993-09-01	1993-09-01

Publications (2)

Publication Number	Publication Date
EP0446552A1 true EP0446552A1 (fr)	1991-09-18
EP0446552B1 EP0446552B1 (fr)	1996-11-27

Family

ID=40097428

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90500017A Expired - Lifetime EP0446552B1 (fr)	1989-02-16	1990-03-16	Composés supraconducteurs et procédé pour leur réalisation

Country Status (3)

Country	Link
US (1)	US5583096A (fr)
EP (1)	EP0446552B1 (fr)
DE (1)	DE69029260D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US20030138372A1 (en) *	1999-04-28	2003-07-24	The Research Foundation Of State University Of New York	Method for identifying and synthesizing high dielectric constant perovskites

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0306973A2 (fr) *	1987-09-11	1989-03-15	W.R. Grace & Co.-Conn.	Procédé de fabrication de céramiques supraconductrices et produits correspondants
EP0309323A1 (fr) *	1987-09-18	1989-03-29	Rhone-Poulenc Chimie	Procédé de préparation de supraconducteurs et produits ainsi obtenus
EP0302308B1 (fr) *	1987-08-04	1994-12-07	Hitachi Metals, Ltd.	Procédé pour la fabrication d'un matériau supraconducteur

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2267290B1 (fr) *	1974-04-12	1976-12-17	Anvar
FR2612507B1 (fr) *	1987-03-19	1989-05-05	Comp Generale Electricite	Oxyde de cuivre a valence mixte supraconducteur et son procede de mise en oeuvre
US5004725A (en) *	1989-04-27	1991-04-02	Ovonic Synthetic Materials Company Inc.	Parametrically modified superconductor material

1990
- 1990-03-16 DE DE69029260T patent/DE69029260D1/de not_active Expired - Lifetime
- 1990-03-16 EP EP90500017A patent/EP0446552B1/fr not_active Expired - Lifetime
1995
- 1995-02-22 US US08/392,403 patent/US5583096A/en not_active Expired - Fee Related

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0302308B1 (fr) *	1987-08-04	1994-12-07	Hitachi Metals, Ltd.	Procédé pour la fabrication d'un matériau supraconducteur
EP0306973A2 (fr) *	1987-09-11	1989-03-15	W.R. Grace & Co.-Conn.	Procédé de fabrication de céramiques supraconductrices et produits correspondants
EP0309323A1 (fr) *	1987-09-18	1989-03-29	Rhone-Poulenc Chimie	Procédé de préparation de supraconducteurs et produits ainsi obtenus

Also Published As

Publication number	Publication date
US5583096A (en)	1996-12-10
EP0446552B1 (fr)	1996-11-27
DE69029260D1 (de)	1997-01-09

Publication	Publication Date	Title
JP2804039B2 (ja)	1998-09-24	化合物超電導体およびその製造方法
US5354535A (en)	1994-10-11	Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor
EP0377359A1 (fr)	1990-07-11	Matériau supraconducteur d'oxyde, procédé pour sa préparation et application
EP0354537B1 (fr)	1993-01-07	Procédé pour la production d'une poudre en oxyde supraconducteur à base de bismuth renfermant du plomb et procédé pour la production d'un article fritté à partir de celui-ci
EP0446552A1 (fr)	1991-09-18	Composés supraconducteurs et procédé pour leur réalisation
JP2767283B2 (ja)	1998-06-18	Ｂｉ―Ｐｂ―Ｓｒ―Ｂａ―Ｃａ―Ｃｕ―Ｏ系超電導物質
US5665662A (en)	1997-09-09	High-temperature superconductor
JP2648524B2 (ja)	1997-09-03	セラミックス及びその製法
JP2636057B2 (ja)	1997-07-30	酸化物超電導体の製造方法
EP0368765B1 (fr)	1996-01-17	Matériau supraconducteur d'oxyde et procédé de sa préparation
US5300486A (en)	1994-04-05	Synthesis of BiPbSrCaCuO superconductor
EP0400666A2 (fr)	1990-12-05	Supraconducteurs du système Bi-Pb-Sr-Ca-Cu-O
EP0489087B1 (fr)	1994-09-28	Compositions d'oxyde metallique supraconductrices et procedes de fabrication et d'utilisation de celles-ci
JP2803823B2 (ja)	1998-09-24	Ｔ１系酸化物超電導体の製造方法
Shrivastava	2018	Synthesis of high-TC superconducting cuprate materials through solid state reaction route
EP0441986B1 (fr)	1995-12-13	Materiau supraconducteur et production de ce materiau
US5229035A (en)	1993-07-20	Bi-Pb-Sr-Ca-Cu-O system superconductors
JP2748942B2 (ja)	1998-05-13	酸化物超電導体
JP2748943B2 (ja)	1998-05-13	酸化物超電導体
EP0459359A2 (fr)	1991-12-04	Supraconducteurs de système Bi-Pb-Sr-Ca-Cu-O
JP2637617B2 (ja)	1997-08-06	超電導材料の製造方法
JP2893405B2 (ja)	1999-05-24	Ｂｉ−Ｐｂ−Ｓｒ−Ｃａ−Ｃｕ−ｏ系超電導物質
JPH0753212A (ja)	1995-02-28	高温超伝導体およびその作製法
EP0463506A1 (fr)	1992-01-02	Oxyde superconducteur et méthode de sa préparation
EP0374689A2 (fr)	1990-06-27	Matériaux supraconducteurs de haute température et méthode pour sa fabrication

Legal Events

Date	Code	Title	Description
1991-08-02	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1992-05-13	17P	Request for examination filed	Effective date: 19920310
1993-12-01	17Q	First examination report despatched	Effective date: 19931015
1996-01-04	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1996-04-27	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1996-06-12	RAP3	Party data changed (applicant data changed or rights of an application transferred)	Owner name: GALVAN CAVAZOS, RAMON
1996-07-31	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
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